WN = web novel
LN = light novel
Dungeon Seeker (Sakamoto 666, 2015) – Main character Junpei Takeda is thrown into another world with his crush as well as some bullies. He soon finds himself trapped in a dungeon after being betrayed by the one he trusted most. After somehow avoiding a gory death at the hands of a skeleton, he instead eats the monster and acquires news skills! And so it happens that Junpei goes around defeating and devouring various enemies while living for the day he can get his revenge. (WN, LN, manga)
My comment:
Tries a little hard to be "edgy" but is otherwise quite enjoyable.
Rising of the Shield Hero /Tate no Yuusha no Nariagari (Aneko Yusagi, 2012) – It’s about Iwatani Naofumi, a hero summoned to another world who becomes bitter and angry after being betrayed by someone he trusted. He gets better though, and he has to work with other heroes to defend the world against a series of monster attacks. (WN, LN, manga)
My comment:
Rather whiny with infuriating characters. I didn't enjoy it but it has its fans.
Arifureta Shokugyou de Sekai Saikyou (Suki Chuuni, 2013) – This one is about Hajime Nagumo, who is summoned to another world with his friends but is abandoned and betrayed by one of his companions (we don’t know which one), which leaves him injured and bitter. Eventually he picks up some good skills and an adoring but not-too-competent sidekick and makes his way out of the dungeon. And that’s as far as I read before I dropped it. (WN, LN, manga, anime coming soon)
My comment:
Meh manga. Bad art and rushed action, not recommended.
Kumo desu ga, nani ka? (Okina Baba, 2015) – I love this one. It’s about a nameless heroine who dies in the real world and gets reincarnated as… a spider?! Yup, a tiny little monster spider in another world. And when you’re a tiny spider, everything’s out to either squish or eat you. How will she ever survive? (WN, LN, manga)
My comment:
The spider is cuter and funnier than you would expect a monster spider to be. Might disappoint people interested in world-building and character interaction but a fun read otherwise.
Tensei Shitara Slime Datta Ken (Fuse, 2013) – A 37-year old man is stabbed to death and reincarnated in another world as a lowly slime. And he may very well have stayed a lowly slime for life if he hadn’t befriended and absorbed the most powerful dragon on the continent. Now renamed Rimuru, he’s a force to contend with as he goes about creating the world he’s always dreamed of. (WN, LN, manga, anime coming soon)
My comment:
If you like the "everyone loves the almighty main character" kind of series, this is for you.
Jaryuu Tensei (Meguru Seto, 2016) – The main character is run over by a car and dies. Then he’s reincarnated as a powerful dragon. An allegedly evil one, which has adventurers clamoring to defeat him. Still he’s so mighty that he doesn’t need to worry about puny little humans… until he accidentally eats a magical item and gets reduced to a human being himself! (manga)
My comment:
Was interesting when the main character was a dragon. Became ordinary afterwards. Not worth reading unless you like cute elf waifus.
Kenja no Mago (Tsuyoshi Yoshioka, 2105)– A normal guy from this world is reincarnated as a baby in another world. He grows up as Shin, a magical prodigy and the adopted grandson of the most powerful sage in the whole world. Eventually he goes off to magical high school just in time to foil a plot to destroy the country with a demon. Now it’s up to Shin and his band of high school buddies to save the world from the evil demon wizard Oliver Strom. (LN, manga, anime coming soon)
My comment:
Not a harem, which is a plus for me and a minus for others. Unremarkable otherwise.
Isekai Tensei Soudouki (Ryousen Takami, 2013) – Strictly speaking, this is not isekai. Rather a baby in another world, Balud Cornelius, is possessed by the souls of an ancient Japanese warlord and a perverted high school boy. This makes him a powerful fighter who knows a lot about business and making money. He quickly catches the eye – and ire – of the rich and powerful as he revolutionizes the world with inventions like gold-plating, water pumps and… hair conditioner? The sky’s the limit for this unlikely trio! (LN, manga)
My comment:
Premise somewhat wasted. Manga dashes all over the place before finally settling on political intrigue. Nothing special but not bad.
Mushoku Tensei -Isekai Ittara Honki Dasu (Rifujin na Magonote, 2012) – A jobless NEET is thrown out by his family and dies a pitiful death. After being reincarnated as a baby named Rudeus, he vows to work harder and treat others better. As he grows up, Rudeus becomes a tutor and picks up some fans, but then the whole country is split by an earth-shattering disaster… (LN, manga)
My comment:
Likeable main character and unexpected twist but not particularly memorable otherwise.
Tensei Shichatta yo. Iya, gomen (Headphone Samurai, 2012)– A self-loathing high school boy with an unhappy family life is accidentally killed by “god” and reincarnated as Will, a ridiculously cute baby with all of the high schooler’s memories. By a lucky chance, all magic in that world is powered by kanji – and Will knows all of them already. Blessed prodigious magical talent, a supportive family and a loving group of buddies, Will is living the dream. Now if only those pesky assassins would stop attacking… (WN, manga)
My comment:
Main character looks adorable. Manga is in early days so not much has happened yet.
Kuro no Souzou Shoukanshi – Tenseisha no Hangyaku (Sora Ikui, 2015) – High school boy Tsuguna is accidentally killed by a “god” and reincarnated in another world. On the plus side he can summon otherworldly helpers through a special book. On the minus side, he’s born with black hair and black eyes, a curse and a calamity in that world. After years of ill-treatment, Tsuguna escapes from his family and takes on the challenges of the new world. But of course someone as special as him could never hope for an ordinary life. (LN, manga)
My comment:
Story is blah, art is blah. Don't go out of your way to read it.
Manuke na FPS Player ga Isekai e Ochita Baai (Jiraigen, 2015)– An online FPS player nicknamed Schwarz Powder falls off the edge of the game-world and lands in another world. He can’t log out or go back, but for some reason he can still make in-game purchases. In-game purchases that include guns and advanced armor in a medieval world. Some guys have all the luck. (WN, LN, manga)
My comment:
Much-despised series, but I enjoyed the focus on guns instead of magic. Only 11 chapters of the manga exist so there's no real story yet. I have not read the WN or LN.
Tenseisha wa Cheat o Nozomanai (Aoi Natsuki, 2015) – Protagonist Mira is a normal 6-year old in a fantasy world. Until she hits her head one day and recovers memories from her past life in our world. She doesn’t remember everything, but she does remember enough to know that isekai protagonists always end up in a world of trouble. That’s the last thing Mira wants. “Please let me be normal, please let me be normal,” is her plea. Unfortunately fate has other plans. (WN, LN, manga)
My comment:
Very cute series, and it's nice to see a shoujo version of the usual isekai trope. Unfortunately this manga was cancelled after one volume. 
However the web novel and light novel are ongoing.